/*
 * Copyright (c) 2020, 2025, keyila All rights reserved.
 *
 */
package com.clp.study.Test.ElevenToTwenty;

import java.util.HashMap;

/**
 * @author clp
 * @version 1.0
 */
public class OneQ {
    public static void main(String[] args) {
        HashMap<String,Integer> map=new HashMap<>();
        map.put("A",1);
        map.put("B",2);
        map.put("A",3);
        System.out.println(map.size());
    }
}
